---- >>> MIT USING 0 <<<---      

             ; FUNCTION Serial2IRQ interrupt 16 using 0
                       PUSH    ACC		
                 E     PUSH    ?C?DPSEL
                 E     MOV     ?C?DPSEL,#00H
                       PUSH    PSW
                       MOV     PSW,#00H          ; SOURCE LINE # 149
                                           
                       Nun folgt der ISR Code...
                       ...bis hier   
      		 
                       POP     PSW		 ; SOURCE LINE # 164
                 E     POP     ?C?DPSEL
                       POP     ACC
                       RETI    
             ; FUNCTION Serial2IRQ (END)
          
          
         
                          
     ---- >>> Ohne USING 0 <<<---                           
                          
               ; FUNCTION Serial2IRQ interrupt 16 
                       PUSH    ACC
                       PUSH    DPH
                       PUSH    DPL
                       PUSH    PSW
                       MOV     PSW,#00H
                 E     XRL     ?C?DPSEL,#01H
                       PUSH    DPH
                       PUSH    DPL
                 E     XRL     ?C?DPSEL,#01H
                       PUSH    AR6               ; SOURCE LINE # 149
                                          
                                              
                       Nun folgt der ISR Code...
                       ...bis hier   
      	 
                                             
                       POP     AR6		 ; SOURCE LINE # 164
                 E     XRL     ?C?DPSEL,#01H
                       POP     DPL
                       POP     DPH
                 E     XRL     ?C?DPSEL,#01H
                       POP     PSW
                       POP     DPL
                       POP     DPH
                       POP     ACC
                       RETI    
             ; FUNCTION Serial2IRQ (END)